Julius Salamon
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ok something went really wrong with my text below the code.
The VREFBUF activation does not seem to work. The VREFBUF is not activated. The ADC measurements we are getting are wrong, and the VREFBUF driver in the kernel is not started (checked with lsmod and dmesg). The kernel module is enabled though.
What is my mistake?
Thank you very much for your help
Never mind. The trick is, to not delete the files that are already prebuild in the devicetree folder.
Then everything works ok.Hello Aedan,
Thank you for your reply.
Your assumption was correct.
When I short the RX Pin with 3.3V everything is working normal.Now i have the problem that I enabled the pull up in the device tree as you said.
But the pull up is happening after the critical boot stage.
I made sure that the pull up is also enabled in TF-A and U-Boot.Any suggestions on how to fix that ?
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